Features 10 MHz to 43 MHz input PCLK support 210 Mbps to 903 Mbps data throughput Single differential pair interconnect Bidirectional control interface channel with I 2C support Embedded clock with DC Balanced coding to support AC-coupled interconnects Capable to drive up to 10 meters shielded twisted-pair I 2C compatible serial interface Single hardware device addressing pin Up to 4 General Purpose Input (GPI)/ Output (GPO) LOCK output reporting pin and AT-SPEED BIST diagnosis feature to validate link integrity Integrated termination resistors 1.8V- or 3.3V-compatible parallel bus interface Single power supply at 1.8V ISO 10605 ESD and IEC 61000-4-2 ESD compliant Automotive grade product: AEC-Q100 Grade 2 qualified Temperature range −40°C to +105°C No reference clock required on Deserializer Programmable Receive Equalization EMI/EMC Mitigation DES Programmable Spread Spectrum (SSCG) outputs DES Receiver staggered outputs Description The DS90UB903Q/DS90UB904Q chipset offers a FPD-Link III interface with a high-speed forward channel and a bidirectional control channel for data transmission over a single differential pair. The DS90UB903Q/904Q incorporates differential signaling on both the high-speed forward channel and bidirectional control channel data paths. The Serializer/ Deserializer pair is targeted for direct connections between graphics host controller and displays modules. This chipset is ideally suited for driving video data to displays requiring 18-bit color depth (RGB666 + HS, VS, and DE) along with bidirectional control channel bus. The primary transport converts 21 bit data over a single high-speed serial stream, along with a separate low latency bidirectional control channel transport that accepts control information from an I 2C port. Using National’s embedded clock technology allows transparent full-duplex communication over a single differential pair, carrying asymmetrical bidirectional control channel information in both directions. This single serial stream simplifies transferring a wide data bus over PCB traces and cable by eliminating the skew problems between parallel data and clock paths. This significantly saves system cost by narrowing data paths that in turn reduce PCB layers, cable width, and connector size and pins. In addition, the Deserializer inputs provide equalization control to compensate for loss from the media over longer distances. Internal DC balanced encoding/decoding is used to support AC-Coupled interconnects. The Serializer is offered in a 40-pin lead in LLP and Deserializer is offered in a 48-pin LLP packages. Applications Automotive Display Systems Central Information Displays Navigation Displays Rear Seat Entertainment Touch Screen Displays

Also Recommended DS90UB903Q▲ Companion Serializer Applications Diagram

Typical Application *click for larger image Applications Diagram	Block Diagram *click for larger image DS90UB903Q/DS90UB904Q BLOCK DIAGRAM

Datasheets

Title		Size	Date	Other Language
	DS90UB904Q 10 - 43MHz 18 Bit Color FPD-Link III Deserializer with Bidirectional Control Channel	907 Kbytes	14-Jan-11

Application Notes

Title		Size	Date	Other Language
	AN-2173: Application Note 2173 I2C Communication Over FPD-Link III with Bidirectional Control Channel	247 Kbytes	14-Jul-11

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS90UB904QSQ/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$5.85 each at 1K+ pcs	reel of 1000
DS90UB904QSQE/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 467 MOUSER Worldwide 250	$5.85 each at 1K+ pcs	reel of 250
DS90UB904QSQX/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$5.85 each at 1K+ pcs	reel of 2500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS90UB904Q.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS90UB904Q is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
DS90UB904QSQ/NOPB	123.191	LLP	48	3	260	Detail	N/A	N/A	NS UZXYTTE# UB904QSQ
DS90UB904QSQE/NOPB	123.191	LLP	48	3	260	Detail	N/A	N/A	NS UZXYTTE# UB904QSQ
DS90UB904QSQX/NOPB	123.191	LLP	48	3	260	Detail	N/A	N/A	NS UZXYTTE# UB904QSQ

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS90UB904Q.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS90UB904Q is located at RoHS Status.

CAD Symbols and Models N/A

Models N/A